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The Online 4003D MAGSIG® is a fully ATEX, IECEx and UL/CSA Class 1 Division 1 certified, non-intrusive pig signaller which quickly and accurately detects, signals, and logs the passage of magnetic pigs at critical points along a pipeline both on land and offshore

High Intensity LED indicators and the internal electronic display signal pig passage locally. For remote signalling, DPDT (VFC) dry relay, 4-20mA, and satellite communication options are available. Bluetooth and RS485 MODBUS permits two-way communication for remote programming and data download. The unit logs the time and date of up to 100 events in local non-volatile memory. A removable SD card enables detailed history of sensor data over time. The user can turn the unit ON and OFF as well as modify several settings locally by using a single control button and easy to use menu system. Pipeline mount and pole/post mounts options are available. For extreme direct sunlight environments sunshades can be provided.

Key Benefits

  • Use of the 4003D MAGSIG® can result in time and therefore cost savings
  • Removes any uncertainty over confirmation of pig passage
  • Quick and easy installation using ratchet straps or steel banding
  • Minimal set up required ensuring time is not lost setting up multiple parameters
  • Versatile – can be installed on any pipeline up to 60” diameter with wall thickness up to 50mm (2”), carrying any medium and with pigs running at varying speeds
  • No location restrictions – can be located on major barrel and magnetic sensor can be supplied on a cable up to 20m (65ft) long for use with buried pipelines or where access is limited
  • Unit can be installed close to pig receiver door, allowing for confirmation that pig has passed isolation valves and easy pig recovery
  • Complete skid mounted systems for remote site locations are available inclusive of Solar Power recharging systems and Satellite communication


External Power: +21.6VDC to +26.4VDC, <1.0W
Battery Type (Alkaline):
Industrial cell 4x Alkaline 1.5V 18Ah D Cells
Battery Life (Alkaline):
1 year (LISTENING/LOW POWER MODE at +20°) Note 1
Battery Type (Lithium):
2x Lithium Thionyl Chloride 3.6V 17Ah D Cells
Battery Life (Lithium):
1 year (LISTENING/LOW POWER MODE at +20°) Note 1

Standard Outputs

ISA Type II 2 wire and 4 wire configurations: 4- 20mA
Relay Output:
DPDT Dry Contacts rated 30VDC, 2A
Removable SD Card:
Micro SD, (32Gb maximum)
Satellite Communication

Temperature Range

External Supply (no cells fitted): -50°C to +85°C (-58°F to +185°F)
Alkaline 1.5V 18Ah Cells:
-20°C to +50°C (-4°F to +122°F)
Lithium Thionyl Chloride Cells:
-40°C to +80°C (-40°F to +176°F)


Enclosure Rating: NEMA 4X / NEMA 7
Entries (other options available):
2x ¾” NPT
Weight in Aluminium: 
3.5kg (8lbs)
Weight in 316L Stainless Steel:
5.5kg (12lbs)
Length (including mounting plate): 240mm (9.4”)
Width (including mounting plate):
192mm (7.6”)
Height (including mounting plate):
165mm (6.5”)


ATEX (Internal Sensor): II 2(1) G Ex db [ia Ga] IIC T4…T6 Gb
ATEX (External Sensor):
II 1/2 (1) G Ex db ia [ia Ga] IIC T4…T6 Ga/Gb
EC Type Examination Certificate Number:
IECEx Certificate Number:
SIR 18.0059X
EMC Certificate Number: